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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2012 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: UpdatesXMLStreamReader.html 813 2013-12-23 16:52:26Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.pobj;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.ArrayList;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.List;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>import javax.xml.stream.XMLStreamException;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import javax.xml.stream.XMLStreamReader;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.dellroad.stuff.xml.AnnotatedXMLStreamReader;<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>/**<a name="line.18"></a>
<span class="sourceLineNo">019</span> * {@link AnnotatedXMLStreamReader} that reads the nested schema update list. Used by {@link PersistentObjectSchemaUpdater}.<a name="line.19"></a>
<span class="sourceLineNo">020</span> */<a name="line.20"></a>
<span class="sourceLineNo">021</span>public class UpdatesXMLStreamReader extends AnnotatedXMLStreamReader {<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>    private ArrayList&lt;String&gt; updates;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>    public UpdatesXMLStreamReader(XMLStreamReader inner) {<a name="line.25"></a>
<span class="sourceLineNo">026</span>        super(inner);<a name="line.26"></a>
<span class="sourceLineNo">027</span>    }<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>    /**<a name="line.29"></a>
<span class="sourceLineNo">030</span>     * Get the updates gleaned from the scan.<a name="line.30"></a>
<span class="sourceLineNo">031</span>     *<a name="line.31"></a>
<span class="sourceLineNo">032</span>     * @return list of updates, or null if the document didn't contain an updates element<a name="line.32"></a>
<span class="sourceLineNo">033</span>     */<a name="line.33"></a>
<span class="sourceLineNo">034</span>    public List&lt;String&gt; getUpdates() {<a name="line.34"></a>
<span class="sourceLineNo">035</span>        return this.updates;<a name="line.35"></a>
<span class="sourceLineNo">036</span>    }<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>    @Override<a name="line.38"></a>
<span class="sourceLineNo">039</span>    protected boolean readAnnotationElement(XMLStreamReader reader) throws XMLStreamException {<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>        // Check element name<a name="line.41"></a>
<span class="sourceLineNo">042</span>        if (reader.getEventType() != START_ELEMENT || !reader.getName().equals(PersistentObjectSchemaUpdater.UPDATES_ELEMENT_NAME))<a name="line.42"></a>
<span class="sourceLineNo">043</span>            return false;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>        // Read updates<a name="line.45"></a>
<span class="sourceLineNo">046</span>        this.updates = new ArrayList&lt;String&gt;();<a name="line.46"></a>
<span class="sourceLineNo">047</span>        while (true) {<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>            // Ignore leading whitespace, comments, and PI's<a name="line.49"></a>
<span class="sourceLineNo">050</span>            int eventType = reader.next();<a name="line.50"></a>
<span class="sourceLineNo">051</span>            while (reader.isWhiteSpace() || eventType == COMMENT || eventType == PROCESSING_INSTRUCTION)<a name="line.51"></a>
<span class="sourceLineNo">052</span>                eventType = reader.next();<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span>            // Done with updates?<a name="line.54"></a>
<span class="sourceLineNo">055</span>            if (reader.isEndElement())<a name="line.55"></a>
<span class="sourceLineNo">056</span>                return true;<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>            // Read &lt;update&gt;text&lt;/update&gt;<a name="line.58"></a>
<span class="sourceLineNo">059</span>            reader.require(START_ELEMENT, PersistentObjectSchemaUpdater.UPDATE_ELEMENT_NAME.getNamespaceURI(),<a name="line.59"></a>
<span class="sourceLineNo">060</span>              PersistentObjectSchemaUpdater.UPDATE_ELEMENT_NAME.getLocalPart());<a name="line.60"></a>
<span class="sourceLineNo">061</span>            this.updates.add(reader.getElementText());<a name="line.61"></a>
<span class="sourceLineNo">062</span>        }<a name="line.62"></a>
<span class="sourceLineNo">063</span>    }<a name="line.63"></a>
<span class="sourceLineNo">064</span>}<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>




























































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